The Maiar are a group of divine spirits in J.R.R. Tolkien's legendarium, specifically within the Middle-earth mythology. They are lesser Ainur, created by Eru Ilúvatar before the shaping of the world. The Maiar serve the more powerful Valar and are associated with various aspects of the world, such as nature, wisdom, and magic. Each Maiar has unique abilities and characteristics. Some notable Maiar include Gandalf, who represents wisdom and guidance, and Sauron, who embodies power and domination. The Maiar play significant roles in the history of Middle-earth, influencing events and aiding both good and evil forces.